question_answer

  Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it, as shown in figure below.            (a) What will be the action of gas on (i) dry litmus paper (ii) moist litmus paper? (b) Write a balanced chemical equation for the reaction taking place.  

Answer:

                  (a) (i) No effect on dry litmus paper. (ii) Blue (moist) litmus turns red by the effect of gas as  is acidic in nature.     (2) (b)         (1)